The Nosler manual says that any ballistic tip hunting bullet (the tests were done with .30 cal 165 gr BTs) should expand down to an impact velocity of 1600 fps, if memory serves. I read it not two weeks ago. It is suprisingly low.
I will through this info in here since it may be relevent. There is no real difference in trajectory if the velocity is the same in bullets of very different styles.
Example: Zero- 200 yards, Muzzle Vel- 2300 fps
Nosler 125 BT - 2.72" high at 100, 0" at 200, 12.63" low at 300.
Speer 130 FN SP (30-30 bullet) - 3.21" high at 100, 0" at 200, 15.42" low at 300.
There is a difference of 0.49" at 100 and 2.79" at 300.
Now let's look at retained velocity at 200 yards. The Nosler will have 1876 fps and the Speer will have 1695 fps. Which bullet will expand the best at these respective velocities? My money goes for the bullet that is designed originally for a slow cartridge.
All of this does not take into consideration accuracy. I have not been able to test how the Speer bullet shoots in a Wh/FB. I will have that info as soon as my range is some-what dry.
I will pose this question for fun right now but I will discuss it at length when I feel like typing for 30 minutes or so.
Which bullet will have better terminal ballistics at Wh/FB velocities, sonic or subsonic? 220 gr MK or a 125 BT/130 FN SP?
Have fun!
__________________
Only hits count... Everything else just draws fire.
|